well, i don't know alot about this myself, but I can pass on some wisdom that's been shared with me.
As for the learning wet from dry, some people try cloth diapers because they feel so yucky when their wet. The new high tech diapers keep the kids so dry, they don't notice. Great for babies, not so good for toilet training.
I've also heard of the naked kid approach, where you play with your kid in the kitchen or easy clean place, and whenever they start to pee, you have them go on the potty. Since the child is naked, the pee running down their legs is pretty uncomfortable, and they learn to associate the feeling with the need to sit on the potty to avoid it.
I will reinforce one thing the other mom's mentioned- it is very important not to create a power struggle over toileting. Doing so just delays the whole process, and causes a lot more problems than it's worth. It can actually set bad precedents that are hard to deal with later on.
I like the sticker chart idea. Just make sure your stickers are smaller than the boxes you draw, and it should work. A friend of mine let her son blow bubbles while on the potty so that he would contently sit there for his bowels to move instead of wanting to go play... he's a very active child. Trying to make potty time fun seems to help. Also, watching to see if they're afraid of anything helps... my sister and I used to be somewhat afraid fo the toilet bowel monster... it could only be found in public bathrooms where the sound was so different from home.
Also, if your child is nuts for a particular character, like Dora the Explorer, yeilding and getting a Dora potty might help... I know someone who did that and it seemed to help. The little girl was all excited to use her Dora Potty.
Be creative, be patient, and have fun!
I Am's Child.